Improvement in valves for water-closets



UNITED STATES PATENT OFFICE.

JAMES E. BOYLE, OF BROOKLYN, ASSIGNOR TO GEORGE STEVENSON,

OE NEW YORK, N. Y.

IMPROVEMENT INV VALVES FOR WATER-CLOSETS.

Specification forming part of Letters Patent No. 37,213, dated December23, 1862.

.To @ZZ whom t may concern:

Be it known that I, JAMES E. BOYLE, of Brooklyn, Kings county, and Stateof New York, have invented a new and useful Improvement in Cocks orValves for Water- Glosets and other Purposes; and I do hereby declarethat the following is a full, clear, and exact description thereof,reference being had to the accompanying drawings, making part of thisspecification, in which- Figure l is an elevation, and Fig. 2 alongitudinal section.

My said invention relates to an improvement in cocks or valves forsupplying water to waterclosets and other pans, secured to me by LettersPatent of the United States, bearing date the 3d day of January, 1860,and by means of which said original invention the valve, after beingopened, will remain so until there is a supply of water, and then willbe closed by the pressure of the water alone, and the closing socontrolled or rendered gradual as to insure a sufficient ow of waterthrough it to wash out the pan. By my present improvement l. accomplishthe same result, but by a more simple and cheap arrangement.

In the accompanying drawings, c represents the body of the cock, whichis to be secured at b to the supply-pipe and at c to the discharge-piped, leading to a pan. The chamber e is cylindrical, and to it is looselyfitted a piston, j', so that water can pass, and this piston is providedwith a cup'leather, g, of the usual construction, so that when moveddownward in the chamber or cylinder c water may pass between thecylinder and said cup-leather, but when moved upward the pressure of thewater on the inside of the cup-leather shall press it outward to packthe joint. Any of the known equivalents may be substituted for thispiston. The piston f is on a hollow stem, h, formed with lateralapertures or water-ways t' and j, one near the bottom and the other nearthe top. The lower end of this stem is cylindrical, and slides in acentral aperture in the bottom lc of the cylinder and through apacking-leather, l, which is secured to the under side of the bottom ofthe cylinder by being clamped between it and the lower part, m, of thecock by a coupling-nut, u. To the lower end of the stem is secured acup-valve, o, the upper rim of which, when the stem is pushed up, bearsagainst the under face of the packmgleather, and prevents the passage ofthe water from the induction or supply pipe, but when the stem isdepressed the water from the supply-pipe passes freely all around to andthrough the induction-ways t', near the lower end, to the inside of thehollow stem, up through that, and out through the eductionlways j, nearthe upper end of the stem, to the inside of the cock, and thence to thedischarge-pipe. Just above the eductionways j the stem passes throughthe center of a flexible diaphragm, p, to which it is properly securedby a water-tight joint. And the edge of this diaphragm is secured to aseat in the top of the body of the cock, in which it is gripped by theedge of a metal cap, q, which is tapped and screwed into place. Thisdiaphragm l prefer to make of that preparation of vulcanizedindia-rubber generally known as packing 7 but it may be made of anyother suitable iiexible substance. The surface of this diaphragmpresents a greater area than the surface ofthe piston f, and inconsequence, as the water under pressure flows into the cock, it willexert a greater force upward against the diaphragm than downward on thepiston f, and hence the stem will be forced upward until the cup-valve ois brought in contact with the packing-leather l, which shuts oft theiiow of water. There is a slight aperture, made either by cutting anotch in the inner periphery 0f the bottom 7c of the cylinder and thepacking-leather l, or otherwise formed, so as to allow water to flowslowly into the cylinder while the valve is open to permit the piston tobe moved up in the cylinder by the pressure of the water against theinner surface of the diaphragm p. Itis the slow lling of the cylinderbelow the piston which prevents the sudden closing of the valve, and thesize of the aperture relatively to the capacity ot the cylinder willdetermine the length of time required to close the valve, hence theduration ofthe iiow ct' water to wash the pan. The stem extends upthrough a hole in the cap 1, where the requisite attachment can be madeor applied for opening the valve, and either the stem should be so loosein the cap as to allow air to iiow freely, or an aperture should be madein the cap for that purpose.

It will be obvious that a piston with an provided with a small apertureor leak to control the elosin g of the valve,and the diaphragm, or theequivalent thereof, for closing the valve by the pressure of the wateralone, substantially as and for the purpose specified.

JAMES E. BoYLE.

Witnesses:

WM. E. BISHOP, A. vDE LACY.

